JPH06311301A - Digital composite picture processing unit - Google Patents

Abstract

PURPOSE:To obtain the digital composite picture processing unit in which paper discharge page orders are arranged in the order of print pages when a printer is in use by the reversing function of a double side unit. CONSTITUTION:A paper sheet whose print is finished is led downward by changeover claws 67,68 and led to a tray 70 arranged to the lower side of a re-paper feed loop 72 by a succeeding changeover claw 69. Then a roller 71 is reversed and the paper is fed again in the reverse direction and led to the re-paper feed loop 72 through the changeover of the changeover claw 69 and fed to a resist roller 62. Then the paper is led to a paper discharge port of a sorter (III) by the changeover claw 67. When the paper is carried again from the resist roller 62, no image is formed but the paper passes under a photosensing drum 4. Thus, the paper is discharged to the outside of the processing unit while its rear side of the print side is kept blank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital composite image processing apparatus, for example, a digital composite image processing apparatus having a copying function and a printer function and a copying function and a facsimile function.

[0002]

2. Description of the Related Art In recent years, digital processing of images has been promoted. Even in the field of copying machines, original images are digitally read, a latent image is written on a photosensitive member by using a laser, and after developing with toner, the latent image is developed. 2. Description of the Related Art Digital copying machines capable of obtaining high-quality copied images by transferring sheets onto paper are becoming widespread. On the other hand, when outputting various images such as sentences, graphs and figures created by a personal computer or a word processor, a laser printer has come to be used in order to obtain high-speed and high-quality output. The image forming process by this laser printer is
Since the same image forming process as that of the digital copying machine is used, the configuration is almost the same as that of the image forming section and the control section of the digital copying machine except the scanner section. Therefore, a digital composite image processing apparatus having both functions of a digital copying machine and a laser printer has been provided for the purpose of effectively using resources by sharing data and reducing the installation area of OA equipment. ing.

Further, since the facsimile apparatus also digitally reads and writes an image using a telephone line, similarly, a digital composite image processing apparatus having both functions of a digital copying machine and a facsimile, and Also provides a digital composite image processing apparatus having the functions of a digital copying machine, a laser printer and a facsimile.

By the way, in general, in a copying machine, when a sheet is ejected, the copied image can be confirmed, and the path of the sheet can be simplified so that the sheet can be copied to various size sheets. Is ejected in a face-up state, that is, in a state where the printing surface faces upward. On the other hand, a printer connected to a personal computer or the like generally starts printing from the first page and then prints from the second page to the third page when printing. For this reason, in a digital composite image processing apparatus having a copier function and a printer function, when printing is sequentially performed from the first page in the printer mode, the paper is ejected in a face-up state, and the page is reversed. It will be printed in the state. That is, printing is completed with the first page of paper at the bottom and the last page at the top. Therefore, conventionally, the transfer paper on which printing has been completed is taken out from the paper discharge tray and the pages are aligned by manually changing the page order. This operation does not take long when the number of pages is small, but when many pages are printed at once, it takes time to align the pages.

In order to solve such a problem, there is also provided a digital composite image processing apparatus in which a paper discharge reversing unit for reversing the paper after printing is arranged near the paper discharge tray. In this digital composite image processing apparatus, when the printer is printing, the reversing unit changes the direction (front and back) of the paper in a face-down state, that is, a direction in which the printing surface faces downward and ejects the paper.

By the way, there is an automatic document feeder called an ADF in order to save the trouble of replacing the document at the time of copying. This ADF is useful not only at the time of copying but also at the time of transmitting an original by facsimile, and is very convenient when continuously transmitting many originals. For this reason, in the digital decoding image processing apparatus having the copying function and the facsimile function, the same ADF, the copying mode and the facsimile mode are used together with the document reading unit.

[0007]

However, in such a digital composite image processing apparatus, if a paper ejection reversing unit for reversing the paper after printing is arranged in the vicinity of the paper ejection tray, the device becomes large and the cost is reduced. It was high. For this reason, it has been difficult to meet the demands for a smaller space due to the decryption of the device and a reduction in the cost at the time of introduction. On the other hand, there is a digital composite image processing apparatus which is provided with a function of memory printing so as to eliminate the reverse order of pages. That is, the information of all pages to be printed is once fetched in the memory, the page order is changed at the time of printing, the printing is started from the last page, and the data is output face up. However, there is a problem that a memory device is required to realize such a function, which is very expensive.

Further, in a digital compound image processing apparatus equipped with an ADF, when copying is performed using the ADF, the copied sheets are fed from the last page of the original in order to arrange them in page order. Of course, even in the case of a facsimile, the document is fed from the last page of the document placed on the document table and conveyed to the document reading section. That is, in the case of facsimile transmission, when the originals are set in page order, the originals will be transmitted from the last page. Usually, on the first page of a facsimile manuscript, a destination name, a sender name, the number of sent manuscripts, etc. are described so as to surely reach the destination. Further, since the originals can be sorted according to the contents described on the first page, they are also used as a slip sheet when receiving a facsimile. Therefore, as the recipient, the original sent by the ordinary facsimile and the original sent by the digital decoding image processing apparatus as described above are
There is a problem that the original received in page order and the object received from the last page are mixed. Even in such a case, there is a function which has a function of memory transmission, in which a document bundle is once read into a memory and the page order is changed at the time of transmission, but again, a large-capacity memory device is required, which is expensive. There is a problem of becoming a device.

Therefore, in the digital composite image processing apparatus of the present invention, in the copying machine with the double-sided function, the reverse function of the double-sided unit can be used without using the discharge reverser for discharging the printer. The first object of the present invention is to make it possible to arrange the order of the discharged pages in the order of the printed pages, thereby reducing the machine cost and the machine installation space. Also,
The digital composite image processing apparatus of the present invention is to provide a digital composite image processing apparatus capable of transmitting from the first page without error during facsimile transmission.

[0010]

According to a first aspect of the present invention, there is provided a mode switching means for switching between a copy mode and a printer mode, and a sheet reversing means for reversing the front and back surfaces of a sheet for which one-sided printing has been completed in the printer mode. The first object is achieved by providing the digital composite image processing apparatus with a discharging unit that discharges the sheet reversed by the sheet inverting unit to the outside of the machine. According to another aspect of the present invention, there is provided a mode switching means for switching between the copy mode and the printer mode, a tray for temporarily stocking at least one sheet for which printing has been completed, and a plurality of sheets for which printing has been completed in the printer mode. Storing means for guiding the sheet to the tray and temporarily storing it, a print end detecting means for detecting the end of printing on the paper, and when the print end detecting means detects the end of printing of all sheets, The first object is achieved by providing the digital composite image processing apparatus with a paper discharge means for discharging the paper stored in the stock means by the storage means to the outside of the machine. According to the third aspect of the invention, mode switching means for switching between the copy mode and the printer mode, stock means for temporarily stocking at least one sheet for which printing has been completed, and a plurality of sheets for which printing has been completed in the printer mode. Storage means for guiding the paper to the stock means for temporary storage, print end detection means for detecting the end of printing on the paper, and print end detection means each time the end of printing of one sheet is detected. The first object is achieved by providing the digital composite image processing apparatus with a paper discharging means for reversing the front and back of the paper stored in the stock means by the storing means and discharging the paper out of the machine. According to the invention described in claim 4, the mode switching means for switching the copy mode and the facsimile transmission mode, the automatic document feeding means for automatically feeding the original to the original reading portion, and the automatic document feeding means for the facsimile transmission mode are arranged. The second object is achieved by providing the digital composite image processing apparatus with a document reversing means for reversing the document. According to the fifth aspect of the invention, the mode switching means for switching between the copy mode and the facsimile transmission mode, the automatic document feeding means for automatically feeding the original document to the original reading portion, and the original document arranged in the automatic document feeding means are blank. Blank sheet discriminating means for discriminating whether or not, and in the facsimile transmission mode, when the blank sheet discriminating means discriminates that a document is a blank sheet, a document reversal for reversing the front and back surfaces of the document arranged in the document automatic feeding means. And a digital composite image processing device,
The second object is achieved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the digital composite image processing apparatus of the present invention will be described in detail below with reference to FIGS. FIG. 1 shows the configuration of the entire digital copying machine. As shown in FIG. 1, the digital composite image processing apparatus is composed of four units including a copying machine body (I), an automatic document feeder (II), a sorter (III), and a multi-sheet automatic duplex unit (IV). It will be described in order below. Copying Machine Main Body (I) The copying machine main body (I) is composed of a scanner unit, a writing unit, a photoconductor unit, a developing unit, a paper feeding unit, and the like. Scanner Unit The scanner unit is equipped with a reflecting mirror 1, a light source 3, and a first mirror 2, and is equipped with a first scanner that moves at a constant speed, a second mirror 4 and a third mirror 5, and It is equipped with a second scanner that moves at a speed half that of the scanner, following the first scanner. An original (not shown) set on the contact glass 9 is optically scanned by the first scanner and the second scanner, and the reflected image is guided to the lens through the color filter 6, and the one-dimensional solid-state image pickup device is obtained. The image is formed on the surface 8.

A fluorescent lamp or a halogen lamp is used as the light source 3, and a fluorescent lamp is generally used because of its stable wavelength and long life. In this embodiment, the reflecting mirror 1 is attached to one light source 3,
You may make it use two or more light sources 3. The solid-state image sensor 8 has a constant sampling clock,
In order to prevent an adverse effect on the image, a fluorescent lamp that is turned on at a higher frequency is used. A CCD (Charge Coupled Device) is generally used as the solid-state imaging device 8. Since the image signal read by the solid-state image sensor 8 is an analog value, analog / digital (A /
D) After being converted, various image processing such as binarization, multi-valued processing, gradation processing, scaling processing, and editing processing is performed on the image processing board 10, and converted into a digital signal as a set of spots.

In order to obtain color image information, in the present embodiment, a color filter 6 which transmits only information of a required color is arranged so that it can be taken in and out in the optical path guided from the original to the solid-state image pickup device 8. Color filter 6 according to the scanning of the document
It is possible to make a wide variety of copies by taking out and putting in and operating the functions such as multiple transfer and double-sided copy each time. In addition, a color original may be read using a 3-line CCD or the like in order to obtain three pieces of RGB information at the same time.

Writing unit The image information after image processing is written on the photosensitive drum 40 in the form of a set of light spots by raster scanning of laser light in the optical writing unit. 2 and 3 show the configuration of the writing unit, and FIG. 4 shows the rayant and the optical path of the writing unit. The laser light output from the semiconductor laser 20 is converted into a parallel light flux by the collimator lens 21, and the aperture 3
The light beam is shaped into a uniform light flux by 2. The shaped laser light is compressed in the sub-scanning direction by the first cylinder lens 22, and then enters the polygon mirror 24.
The polygon mirror 24 is formed in an accurate polygon and is rotated by a polygon motor 25 in a certain direction at a constant speed. The rotation speed of this polygon mirror 24 is
It is determined by the rotation speed of the photosensitive drum 40, the writing density, and the number of faces of the polygon mirror 24.

The reflected light of the laser light incident on the polygon mirror 24 is deflected by the rotation of the polygon mirror 24. The deflected laser light is reflected by the fθ lens 26.
It is incident on a and 26b sequentially. fθ lens 26a, 26b
Is converted into scanning light having a constant angular velocity so as to scan the photosensitive drum 40 at a constant speed, and forms an image at the minimum light spot on the photosensitive drum 40. There is. The laser light that has passed through the fθ lenses 26a and 26b is incident on the synchronization detection light input unit 30 by the synchronization detection mirror 29 arranged outside the image area. The incident laser light is propagated to the sensor unit by the optical fiber, synchronous detection serving as a reference for cueing in the main scanning direction is performed, and a synchronous signal is output. The image data for one line is output after a fixed period of time from the output of the synchronization signal, and thereafter, this is repeated to form one image.

Photosensitive member The outer peripheral surface of the photosensitive drum 40 has, for example, a wavelength of 780 nm.
A photosensitive layer having sensitivity to the semiconductor laser is formed. As the photosensitive layer, an organic photoconductor (OPC), α
-Si, Se-Te, etc. are known, and the organic photoconductor (OPC) is used in this embodiment. When performing laser writing on the photoconductor drum 40, a negative / positive (N / P) process of shining light on the image portion is adopted, but a positive / positive (P / P) process of shining light on the background portion is used. It is also possible. The charging charger 41 is a scorotron type having a grid on the side of the photoconductor drum 40, and uniformly charges the surface of the photoconductor drum 40 to (-). The image forming portion of the negatively charged photosensitive drum 40 is irradiated with laser light to reduce the potential of that portion. Then, the background portion of the surface of the photosensitive drum 40 is -750 to -8.
The image portion irradiated with the laser beam of 00V has a potential of about -500V, and an electrostatic latent image is formed on the surface of the photosensitive drum 40. For the electrostatic latent image, the developing devices 42a, 42
A bias voltage of −500 to −600 V is applied to the developing roller in b, and (−) charged toner is attached to make the electrostatic latent image formed on the photosensitive drum 40 visible as a toner image.

Developing Unit This digital composite image processing apparatus includes two developing units, a main developing unit 42a and a sub developing unit 42b. Black toner is set in the toner replenishing device 43a corresponding to the main developing device 42a, and the toner replenishing device 43 corresponding to the sub developing device 42b.
Color toner is set in b. Then, during the development of one color, the development is selectively performed by changing the main pole position of the developing device of the other color. The sub-developing device 42b and the toner replenishing device 43b corresponding to the sub-developing device 42b are detachable so that they can be detached when printing in one black color. By using this developing unit, the color filter 6 of the scanner is switched to read each color information, and by combining the paper transfer system multiple transfer, double-sided copy function, and the like, multifunctional color copying and color editing can be performed. It is possible to perform three or more developments by a method of arranging three or more development devices around the photoconductor drum 40, a revolver method of rotating and switching three or more development devices, or the like.

The toner images visualized by the developing units 42a and 42b are transferred to the photosensitive drum 4 at the transfer charger 44.
The positive (+) charge is applied from the back surface of the paper to the paper surface that has been synchronized to 0 and transferred onto the paper. The sheet on which the toner image is transferred is subjected to AC charge removal by a separation charger 45 which is integrally held with the transfer charger 44, and is separated from the photosensitive drum 40. On the other hand, the toner remaining on the photosensitive drum 40 without being transferred onto the sheet is scraped off by the cleaning blade 47 and collected in the attached tank 48. Further, the potential pattern remaining on the photosensitive drum 40 is erased by irradiating it with light from the static elimination lamp 49.

The developing device 42 is rotated in the direction of rotation of the photosensitive drum 40.
At the position behind and immediately after the development is performed, the photo sensor 50 that is paired with the light emitting element is arranged. The photo sensor 50 detects the reflection density of the surface of the photoconductor drum 40 at a position outside the image forming portion of the photoconductor drum 40 in the longitudinal direction. This is because the optical writing unit writes a fixed pattern, for example, a pattern of black or halftone dots, at a position corresponding to the reading position of the photo sensor 50.
This is developed. Then, the image density is judged from the ratio of the reflectance of the pattern portion after development and the reflectance of the photosensitive drum 40 other than the pattern portion, and if the image density is low, a toner replenishment signal is output.
In addition, the fact that the density does not increase even after replenishment is used to detect insufficient toner remaining amount.

Paper Feeding Unit In this digital composite image processing apparatus, a plurality of cassettes 60a, 60b, 60c can be set, and the paper once transferred is passed through a paper re-feeding loop 72 for double-sided copying or The paper can be re-fed. When the start button is pressed after one cassette 60 is selected by the user or automatically from the plurality of cassettes 60a, 60b, 60c,
The paper feed roller 61 (6 near the selected cassette 60)
1a, 61b, 61c) rotate, and the sheet is fed until the leading edge of the sheet hits the registration roller 62. Although the registration roller 62 is stopped at this time, the registration roller 62 starts rotating at the timing of the image position formed on the photoconductor drum 40, and feeds the paper to the peripheral surface of the photoconductor drum 40. After that, the toner image is transferred to the sheet at the transfer section, suctioned and conveyed at the separation / conveyance section 63, and supplied to the fixing roller. The fixing roller is composed of a heat roller 64 and a pressure roller 65, and the toner image transferred onto the paper is fixed on the paper surface here.

In the case of a normal copy, the sheet transferred and fixed in this manner is sorted by the switching claw 67 into a sorter (I
It is guided to the paper discharge port on the II) side. On the other hand, during multiple copy,
The direction can be changed by the switching claws 68 and 69, and the sorter (II
It is guided to the registration roller 62 again through the lower re-feeding loop 72 without being discharged to the I) side. In the case of double-sided copying, there are two types, one is only using the copying machine main body (I) and the other is using the multiple-sheet automatic double-sided unit (IV). Here, the former case will be described. Switching claw 67
The sheet guided downwards by is further guided downward by the switching claw 68, and is guided by the next switching claw 69 to the tray 70 further below the re-feeding loop 72. Then, it is fed again in the opposite direction by reversing the roller 71, guided to the refeed loop 72 by switching the switching claw 69, and fed to the registration roller 62.

Automatic Document Feeder (II) The automatic document feeder (ADF) automatically guides the originals one by one onto the contact glass 9 and automatically discharges them after copying. The operator turns the document upwards and
The document is placed on the DF document feeder 100. The placed guides are aligned in the widthwise direction by the side guides 101. The placed originals are fed one by one from the originals on the lower side by a paper feed roller 104, and are fed.
It is carried to a predetermined position on the contact glass 9 by the rotation of 2 and positioned. When the designated number of copies have been completed, the original is discharged to the discharge tray 103 by the rotation of the conveyor belt 102 again. Here, the reason why the lower original is fed is that the copied transfer sheets are discharged to the discharge tray in page order. The size of the document is detected by counting the position of the side guide 101 and the document feeding time.

Further, a multi-sheet automatic duplex unit (I
Due to V), double-sided copying is obtained. In this case, the original may be a mode in which two single-sided originals are copied on both sides of one sheet, or a single-sided original is copied on both sides of one sheet as it is. For this reason, the ADF has a function of reversing the front and back of a document in order to copy the front and back of a double-sided document. When reversing an original, reverse the original and eject roller 1
05 and the reverse path switching claw 106 are driven. In the normal copy mode, place the original face up and
The DF starts copying from the last page of the set original. On the other hand, when transmitting a document in the facsimile mode, the document surface is set face down. Then, feeding is started from the first page, and as in the case of making a double-sided copy from a double-sided original, the front and back sides of the original are reversed using the document inversion function, and the image reading unit is stopped. In this state, the document surface is set on the reading surface.

Sorter (III) The sorter (III) selectively feeds the paper discharged from the copying machine main body (I), for example, in page order, page by page, or to preset bins 111a to 111x. It is a device. The paper fed by the plurality of rollers rotated by the motor 110 is guided to the selected bin 111 by switching the claws near the entrance of each bin 111.

Multiple-sided automatic double-sided unit (IV) In the case of only the copying machine main body (I), only double-sided copying can be performed for each sheet. It becomes possible to do. When making a double-sided copy for a plurality of sheets at once, the sheet whose development and fixing have been completed on one side is guided downward by the paper discharge roller 66 and is sent to the multiple-sheet automatic double-sided unit (IV) by the next switching claw 67. Multiple automatic double sided unit (IV)
The sheets that have entered are collected on the tray 123 by the sheet discharge rollers 120. At this time, the feed roller 121 and the side surface alignment guide 122 align the paper vertically and horizontally. Tray 12
The sheets stacked on the sheet 3 are re-fed by the re-feeding roller 124 at the time of back side copying. At this time, the refeed loop 72 is directly guided by the switching claw 69.

In FIG. 1, 27 is a mirror and 28 is a mirror.
Is a dust-proof glass, 31 is a lens holding unit, 46 is a separation claw for separating the paper on which the toner image has been transferred by the transfer charger 44 from the photosensitive drum 40, 80 is a main motor, 81 is a heat roller 64, and the copying machine main body is used. Inside is a fan motor.

Electrical Equipment Control Section FIG. 5 shows the construction of an electrical transmission control section for controlling each of the copying machine body (I), automatic document feeder (II), sorter (III) and multi-sheet automatic duplex unit (IV). Is represented. Further, FIG. 6 is a block diagram showing the entire electric component control unit. The control unit of the digital composite image processing apparatus performs sequence-related control by a CPU.
(A) and a CPU that controls operations
It has two CPUs shown in (b). Both CPUs
(A) and the CPU (b) are connected by a serial interface (RS232C).

Sequence-Related Control First, sequence control will be described. The sequence is used to set and output conditions related to paper transport timing and image formation. Paper size sensors, sensors related to paper transport such as paper discharge detection and registration detection, duplex units, high-voltage power supply units, drivers for relays, solenoids, motors, etc. , A sorter unit, a laser unit, a scanner unit, etc. are connected. Regarding sensors, a paper size sensor that detects the size and orientation of the paper loaded in the paper cassette and outputs an electrical signal according to the detection result, a sensor related to paper transport such as registration detection and paper discharge detection, oil end, toner end, etc. There are inputs from sensors that detect the presence or absence of supplies, and sensors that detect machine abnormalities such as door open and blown fuse. In the duplex unit, the motor for adjusting the width of the paper, the paper feed clutch,
There are a solenoid for changing the conveyance path, a paper presence / absence detection sensor, a side fence home position sensor for making the width of the paper uniform, a sensor for paper conveyance, and the like.

The high-voltage power supply unit applies predetermined high-voltage power to the outputs of the charging charger, the transfer charger, the separation charger, and the developing bias electrode by the duty obtained by the PWM control. The PWM control is controlled so that the feedback value of each high-voltage power output is converted into a digital value by A / D conversion so that it becomes equal to the target value. Drivers include a paper feed clutch, registration clutch, counter, motor, toner replenishment solenoid, power relay, and fixing heater. It is connected to the sorter unit via a serial interface, and the paper is conveyed at a predetermined timing by a signal from the sequence and discharged to each bin.

To the analog input, a fixing temperature, a photo sensor input, a laser diode monitor input, a laser diode reference voltage, a feedback value of an output value from various high-voltage power supplies, and the like are input. On / off control or phase control of the heater is performed so that the temperature of the fixing unit becomes constant by the input from the thermistor in the fixing unit.
The photosensor input is a photopattern input at a predetermined timing by a phototransistor, and by detecting the density of the pattern, the toner replenishment clutch is turned on / off to control the toner density. The toner end is also detected based on this density. An analog input of the A / D converter and the CPU is used as a mechanism for adjusting the power of the laser diode to be constant. This is controlled so that the monitor voltage when the laser diode is turned on matches a preset reference voltage (this voltage is set so that the laser diode becomes 3 mW in this embodiment).

Operation-related control The main CPU (b) controls a plurality of serial ports and a calendar IC. In addition to the sequence control CPU (a), an operation unit, a scanner, an application, an editor, etc. are connected to the plurality of serial ports. The operation unit has a display for displaying the operator's key input and the status of the copying machine, and informs the main CPU of the key input information by serial communication. Based on this information, the main CPU (b) determines whether the indicator of the operation unit is on, off, or blinks, and serially transmits to the operation unit. The operation unit CPU is the main CPU
The display is turned on, off, and blinks according to the information from (b). Furthermore, the machine operating conditions are determined from the obtained information, and sequence control is performed at the start of copying.
Communicate the information to PU (a). In the scanner unit, scanner servo motor drive control and image processing, serial transmission of information relating to image reading to the main CPU (b), and interface processing between the ADF and the main CPU (b) are performed.

The application is an interface between an external device (fax, printer, etc) and the main CPU (b), and exchanges preset information contents. The editor is a unit for inputting an editing function, and serially transmits the image editing data (masking, trimming, image shift, etc) input by the operator to the main CPU (b). Calendar IC is
The date and time are stored and can be called by the main CPU (b) at any time. Therefore, by displaying the current time on the operation unit display and setting the machine on / off time, the machine power is turned on / off. It is possible to control the turning off with a timer.

Image Data Processing Next, the flow of image data processing will be described. The gate array is set to the following 3 according to the select signal from CPU (b).
The image data (DATA0 to DATA7) and the synchronizing signal are output in the direction. (I) Scanner control circuit → image control circuit In this case, 8-bit data from the scanner (however, 4b
The image signal sent continuously by (it or 1 bit) can be used as the synchronization signal PMS from the laser beam scanner unit.
Output to the image control circuit in synchronization with YNC. (Ii) Scanner control circuit-> application In this case, 8-bit data from the scanner (however, 4b
The image signal continuously transmitted by (it or 1 bit) can be output in parallel to the application. The application outputs the input image data to an output device such as a printer connected to the outside. (Iii) Application → image control circuit In this case, the application is 8-bit data from an input device (fax or the like) externally connected (however, 4 bits).
The image signal continuously transmitted by 1 bit can also be used as a synchronization signal PMSY from the laser beam scanner unit.
Output to the image control circuit in synchronization with NC. in this case,
When the image signal from the outside is 1 bit or 4 bit,
It is necessary to perform a process of converting to 8-bit data.

FIG. 7 is a block diagram of the image scanner section. An analog image signal output from the CCD image sensor 407 is amplified and light amount corrected by a signal processing circuit 451 inside an image preprocessor (IPP), and then A / A
It is converted into a digital multilevel signal by the D converter 452. This signal is subjected to correction processing by the shading correction circuit 453, and the image processing unit (IPU)
454 is applied. Image process unit (IP
A schematic block diagram of (U) 454 is shown in FIG. The image signal applied to the IPU is high-frequency emphasized by the MTF correction circuit, electrically scaled by the scaling circuit, and applied to the γ conversion circuit. The γ conversion circuit optimizes the input characteristics according to the characteristics of the machine. The image signal output from the γ conversion circuit is converted to a predetermined quantization level by SW1 of the data depth switching mechanism. This switching mechanism switches to the three data types shown in FIG. The 4-bit conversion circuit outputs 4-bit data, and the binarization circuit converts the input 8-bit multivalued data into binary data by a preset fixed threshold value and outputs 1-bit data. The dither circuit uses 1-bit data to create an area gradation. SW1 selects one of three data types and selects DATA0 to DAT
Output as A7.

The scanner control circuit 460 is the main CPU
According to the instruction from (b), the fluorescent lamp ballast 458, the timing control circuit 459, the electric scaling circuit of the IPU, and the scanner drive motor 465 are controlled. Fluorescent light ballast 45
Reference numeral 8 controls ON / OFF of the fluorescent lamp 402 and light amount control according to an instruction from the scanner control circuit 460. A rotary encoder 46 is attached to the drive shaft of the scanner drive motor 465.
6 is connected, and the position sensor 462 detects the reference position of the sub-scanning drive mechanism. The electrical scaling circuit performs electrical scaling processing according to the magnification data on the main scanning side set by the scanner control circuit 460. Timing control circuit 45
Reference numeral 9 outputs each signal in accordance with an instruction from the scanner control circuit 460. That is, when reading is started, a transfer signal for transferring data for one line to the shift register and a shift clock pulse for outputting the data in the shift register bit by bit are given to the CCD image sensor 407. The pixel synchronization clock pulse CLK, the main scanning synchronization pulse LSYNC, and the main scanning effective period signal LGATE are output to the image reproduction system control unit.

This pixel synchronizing clock pulse CLK is C
The signal is almost the same as the shift clock pulse given to the CD image sensor 407. Also, the main scanning synchronization pulse L
SYNC is almost the same signal as the main scanning synchronization signal PMSYNC output by the beam sensor of the image writing unit, but is output in synchronization with the pixel synchronization clock pulse CLK. The main scanning effective period signal LGATE becomes the high level H at the timing when the output data DATA0 to DATA7 are considered to be effective data. In this example, the CCD image sensor 407 has 480 lines per line.
Outputs 0-bit valid data. Scanner control circuit 4
When the 60 receives a reading start instruction from the main CPU (b), the fluorescent lamp 402 for illumination is turned on, the driving of the scanner driving motor 465 is started, and the timing control circuit 459.
Control to start the reading of the CCD image sensor. Further, the sub-scanning effective period signal FGATE is set to the high level H.
Set to. This signal FGATE becomes low level L after the time required to scan the maximum reading length (dimension in the A size longitudinal direction in this example) in the sub-scanning direction after being set to high level H.

FIG. 10 shows a block configuration of a memory system in the digital composite image processing apparatus. An image signal from the photo sensor (CCD) is output as 8-bit data through an image preprocessor (IPP) having functions of shading correction, black level correction, and light amount correction. This data is sent to multiplexer 1 (MUX
Selected in 1), spatial frequency high range emphasis (MTF correction)
Function, speed conversion function (magnification), y conversion function, data depth conversion function (8bit / 4bit / 1bit conversion), processed by the image process unit (IPU) and output to the printer section PR through MUX3. .

In a system having a frame memory for image data, the image data from the IPU is temporarily stored in the memory device (MEM) as shown in FIG. 11, and is taken out from the memory device (MEM) when necessary, and the printer ( PR). A general method is to output the image data from the IPU to the printer (PR), simultaneously store the image data in the memory device (MEM), and perform the second and subsequent copies with the image data from the memory device (MEM). there were. This apparatus is configured so that the data flow as shown in FIG. 12 is possible so that both the processed data and the raw data from the IPU can be loaded into the memory device. That is, the data flow is changed by switching the three multiplexers MUX1, MUX2, MUX3 shown in FIG. For example,
In the case of outputting a copy in which the parameters of a plurality of IPUs are changed by one-time scanner scanning, it can be achieved by the following procedure. (I) When scanning the scanner, set MUX1 to A and MUX2
To B to MUX3 to A and output the first sheet. At this time,
Raw data enters the memory device (MEM) through MUX2. (Ii) After the second sheet, MUX1 is set to B, data from the memory device (MEM) is put into the IPU, and is output to the printer (PR) through the MUX3. At this time, the IPU parameter is changed every time one sheet is copied.

When holding compact data such as 1-bit data, the MUX2 is set to the A side and the IP
Capture the output of U into the memory device. In this case, the printer device switches to the binary data (1 bit) mode and copies. EXTIN and EXTOUT shown in FIG. 10 are an image data input signal from the outside and an output signal to the outside.

FIG. 13 shows the configuration of the memory device (MEM). Compressors (COMP) and decompressors (EXP) are inserted before and after the memory unit (Memory Uni) to compress data other than actual data. Data can also be stored. In this configuration, the compressor (COMP) must operate at the speed of the scanner, and the decompressor (EXP) must operate at the speed of the printer. When storing the actual data, the multiplexers MUX4 and MUX5 are set to the A side respectively, and when the compressed data are used, they are set to the B side respectively. FIG. 14 shows the configuration of the memory unit shown in FIG. In this memory unit, an input data width converter and an output data width converter are provided in a memory block (Memory Bl) in order to handle three different types of image data and compressed code data.
It is arranged on the input / output side of The direct memory controller (DMA1, DMA2) writes and reads data at a predetermined address of the memory block according to the number of packed data and the memory data width.

FIG. 15 shows three data types of image data handled by the memory unit. Normally, the speed of image data from the scanner or the speed of image data to the printer is constant regardless of 8-bit data, 4-bit data, or 1-bit data. That is, the period of 1 pixel is fixed in the device. In this digital composite image processing device,
MSB (Most Significant Bit) of 8 data lines
From the side, 1-bit data, 4-bit data, 8-bit data and MSB justification are defined. The blocks for packing and unpacking this data in the data width (16 bits) of the memory block are the input data width converter and the output data width converter. By packing, the memory can be used according to the data depth, and the memory device can be effectively used.

FIG. 16 shows another structure of the memory device. This memory device has a pixel process unit (PPU) instead of a compressor (COMP) and an expander (EXP) arranged outside the memory unit. The function of the PPU is to realize logical operations such as AND, OR, EXOR, and NOT between image data. This PPU calculates the memory output data and the input data and outputs it to the printer.
The memory output and input data, for example scan data, can be calculated and stored again in the memory unit. Switching between output destination printer and memory unit is MUX6, M
Perform at UX7. This function is generally used for image composition, and is used, for example, to put overlay data in a memory unit and overlay the scanner data.

FIG. 17 shows a structure for storing image data using an external storage device. When the image data is stored in the floppy disk, it is output from the EXTOUT of FIG. 10 to the floppy disk controller (FDC) controlled by the file controller (FileController) through the interface (I / F),
A floppy disk on a floppy disk drive (FDD) is used for storage. Under the control of the file controller, the hard disk controller (H
DC) and hard disk drive (HDD)
It is configured to be able to read and write on the storage medium of the hard disk. Hard disk drive (HDD)
Stores commonly used format data and overlay data so that they can be used as needed.

FIG. 18 shows still another structure of the memory device. This memory device has a configuration capable of 100% recovery when the processing speeds of compression and decompression are not in time. At the same time as the scanner scans, the memory unit receives the compressed data and the image data in the memory unit. The incoming data is stored in different memory areas, but the compressed data is directly input to the decompressor (EXP) and decompressed. If the processing time of the compressor (COMP) and the decompressor (EXP) is completed normally in time for all the data of one page to enter the memory unit, only the memory area of compressed data remains and the area of raw data is canceled. . If the error detection circuit (Erro
r Detect) is a compressor (COMP) or expander (EXP)
When an error signal from is detected, the compressed data area is immediately canceled and raw data is adopted.

The memory management unit (MMU) is a unit for controlling the memory so that two input data and one output data can be simultaneously input / output to / from the memory unit. This real-time verification of compression and decompression made it possible to use the memory area efficiently and reliably. In this embodiment, this configuration allows dynamic allocation of the memory area by the memory management unit (MMU), but two memory units for raw data and compressed data may be provided. Figure 1
The memory device shown in FIG. 8 is most suitable for applications such as electronic sorting, in which a plurality of pages are stored and output to a printer in real time, in which both the number of stored pages and the printing speed must be compatible.

Application Unit FIG. 19 shows the configuration of the application unit. In this digital composite image processing device, the APL
1 (file unit), APL2 (FAX unit), APL3 (ON / OFF printer unit), AP
Each application unit is composed of L4 (LAN) and display (T / S, LCD).

(I) Base Section The base section is for performing basic control of the digital composite image processing apparatus. Base part is engine I / F
(Interface), this engine I /
F converts the image data supplied as serial data into parallel data. The parallel data stored in the page memory is serially converted by this engine I / F and output to EXTIN. The control signal is serial and is connected to the system bus via the engine I / F and SCI (serial communication interface). The page memory has a storage capacity for one page of A3 size paper.
At the same time as converting to an image, arbitration of the data speed of EXTIN and EXTOUT and the processing speed of CPU is also performed. The scaling circuit is used for enlarging or reducing the data on the page memory by this circuit, and D is used for high-speed processing.
High-speed processing is performed using a MAC without going through the CPU.

The rotation control unit is for rotating the transmission document by 90 degrees. That is, for example, in the case of a FAX transmission in which the original to be sent is A4 vertical and the receiving is A4 horizontal, the sending side automatically reduces the size to 71% and sends it, which makes the receiving side difficult to see. To prevent this,
If the horizontal and vertical sizes on the transmitting and receiving sides are different, the transmission original is rotated by 90 degrees to be converted, and the same size transmission is performed. As another function of the rotation control unit, it is used when the paper direction of the received data and the paper direction of the cassette differ by 90 degrees. That is, for example, when the receiving size is A4 horizontal and the cassette size is A4 vertical, the rotation control unit rotates the output image by 90 degrees and converts it to A4 vertical and outputs it. This eliminates the need to distinguish between the vertical and horizontal cassettes. The CEP is a circuit having functions of image data compression, expansion, and through. The bus arbiter performs processing of sending data from the AGDC to the image bus and sending to the system bus. The timer has a function of generating a predetermined clock. The RTC is a clock and generates the current time. The console is a terminal for control, and in addition to reading and rewriting data inside the system using this terminal, the console 1
Software can be developed using the debug tool, which is a function. The ROM is a read-only memory that stores various programs for realizing basic functions such as the OS. The RAM is a random access memory mainly used for working.

(Ii) APL1 SCSI is an I / F for HDD (hard disk), ODD (optical disk), and FDD (floppy disk). R
The OM controls the HDD, ODD, and FDD via SCSI and stores a program as a filing system.

(Iii) APL2 APL2 is a unit for FAX control and is composed of the following parts. The G4 FAX controller is a unit for controlling a protocol for G4, and here, it supports class 1, class 2, and class 3 of G4. The G4FAX controller also supports ISDN, and 2B + 1D (64K) in NET64.
(B × 2 + 16KB), so G4 / G4, G4
/ G3, G3 / G3, G4 only, or G3 only. The G3FAX controller is a unit for controlling the protocol for G3, and in this part is also equipped with a G3FAX protocol by an analog line and a modem for converting a digital signal into an analog signal. NCU (Network control
The unit) has a function of dialing when connecting to the other party using the exchange or receiving an incoming call from the other party.

SAF (store and forward) is for accumulating image data (including image data, code data, etc.) when transmitting and receiving FAX. Here, a semiconductor memory, HDD, ODD, or the like is used. The ROM 2 stores a program for controlling the APL 2. Further, the RAM is used for its working and is made non-volatile by a battery, in which the telephone number of the other party, the other party's name, the F
Stores various data that controls the AX function,
It can be easily set using the T / S and LCD of the display unit.

(Iv) APL3 APL3 is a unit for controlling an online printer and an offline printer. DC (floppy desk controller) controls the floppy desk.
Some of the recent floppy devices support SCSI, and here the SCSI and ST506 interfaces are supported. SCI (Serial Communication Interface) is used for connection with the HOST computer. Centro I / F, like SCI, has HOST
Used to connect to the computer. The emulation card does the following: That is, when looking at the printers from the HOST, there are currently various printers for each company's products, and the specifications of these printers have changed somewhat. If the functions of these printers are not the same as seen from the HOST, the software used in the HOST may not run. In order to prevent such a situation, an emulation card is arranged so that the software contained therein can operate as a printer of each manufacturer when viewed from the HOST.

AGDC (Advanced Graphics
The display controller) develops the FONT image in the CGROM (character generator ROM) or CG card in the page memory at high speed according to the code data sent from the HOST. The ROM 3 stores programs for controlling these. CGR
FO corresponding to code data for OM and CG cards
NT data is stored, and as the format of FONT, there is data such as outline FONT. The CG card is an external CGFONT.

(V) APL4 APL4 is a LAN (local area network)
It is a unit for controlling. LA currently in operation
It controls N, which is an internet, omni, star run, etc. This APL4 (LAN) and APL2 (FA
X) works in the backland while other application units are operating.

(Vi) Display Unit The unit of this display unit allows a liquid crystal display device (LCD).
And a touch switch (T / S). The LCD can display graphics and characters, and the CG (character generator) among them can be displayed in ANK (Alphabet Numeric Kana).
), The second level code of Kanji is built in. TS
C is a touch switch controller, where T / S
The T / S for controlling is divided by the grids of X and Y,
The size of the switch when used by the operator is TSC
With, it is possible to set freely by deciding the number of grids for one key. Also LCD and T / S
Has a two-layer structure, and the key size and the LCD key frame can correspond to each other.

Next, in the digital composite image processing apparatus configured as described above, the operation of the first embodiment for aligning the discharged pages when the printer function is used and the first page when the facsimile function is used The operation of the second embodiment will be described. Operation of First Embodiment First, the conveyance control of the print-completed paper in the printer mode will be described. Here, the control operation is performed in each of the case where the multiple-sheet automatic duplex unit (IV) is arranged and the case where there is no multiple-sheet automatic duplex unit and only one side of the copying machine is capable of printing on both sides. Will be described.

When the multi-sheet automatic double-sided unit (IV) is not arranged The printed sheet is guided downward by the switching claw 67 as described in the operation of the sheet feeding section in the double-sided copying at the above-mentioned copying. . Then, the sheet is guided further downward by the switching claw 68, and is guided by the next switching claw 69 to the tray 70 arranged below the refeeding loop 72. After that, the rotation of the roller 71 is reversed, the sheet is re-fed in the opposite direction, is guided to the re-feeding loop 72 by switching the switching claw 69, and is fed to the registration roller 62. And
The switching claw 67 guides the sheet to the sheet discharge port on the sorter (III) side. When it is conveyed again from the registration roller 62, it passes below the photosensitive drum 4 without forming an image. As a result, the paper is ejected out of the machine with the back side of the printing surface being blank.

When the multi-sheet automatic double-sided unit (IV) is arranged When printing a plurality of sheets collectively, the paper guided in the paper discharge direction by the fixing roller 64 is moved by the next switching claw 68 to the multi-sheet automatic double-sided unit. Sent to (IV). The paper that has entered the multi-sided automatic double-sided unit (IV) is discharged to the tray 12 by the paper discharge roller 120.
Stacked on 3. At that time, the feed roller 121 and the side-face alignment guide 122 align the paper vertically and horizontally. When it is determined that a series of printer printouts has been completed, the sheets stacked on the tray 123 are sequentially re-fed by the re-feed roller 124. At this time, the switching claw 69 directly guides the sheet to the refeeding loop 72. Then, as in the case without the multi-sheet automatic double-sided unit (IV), the image is not formed and one side is discharged to the outside of the machine with a blank sheet. By performing such an operation, the data sent to the printer is
Even if pages are started, the pages are ejected in order of pages on the ejection tray.

When a large number of automatic double-sided units (IV) are arranged, it is possible to use the reversing function built in the main body. In this case, a switching claw 68 for switching whether the sheet is conveyed to the multi-sided double-sided processing path or the main body single-sided double-sided processing path.
If the next print is started before the paper arrives at 6
Switch the switching claw to the double-sided processing path for a large number of 8
If the next printing is not started even when the paper arrives at 8, the switching claw 68 is switched to the one-sided double-sided processing path direction so as to guide the paper to the one-sided double-sided path. At the timing of re-feeding and discharging from the multi-sheet duplex unit, it was described above that it was determined that the printer print output was completed, but this is because the print data was transferred from an external device for a certain period of time. If not, the discharging operation is started by the time-out function.

Next, the control flow for the operation of the first embodiment will be described with reference to FIGS. In addition,
Here, description will be given only when the mode is the printer mode. In the case of printing surface processing (step 1; Y), a sensor for monitoring the wrapping of the paper around the fixing roller is arranged at the exit of the fixing roller as a fixing sensor, and this sensor turns on at the rising edge (step 2; Y), start counting (step 3). The counter starts counting up. This counter is incremented by 1 when the paper is conveyed by 1 mm. In other words, the paper transport speed is
If it is 200 mm / sec, it is counted up every 0.5 msec. When this counter exceeds a certain count (step 4; Y), the switching pawl 67 for conveying the paper in the double-sided direction is switched in the double-sided path direction (step 5).

Then, when this counter exceeds a certain count, it is judged whether or not the print data of the next page is inputted (step 14). At this timing, a large number of sheets of automatic double-sided unit (IV),
This is the timing before reaching the branching claw 68 for branching in any direction of the single-sided double-sided processing paths 69 to 71. If the print data for the next page has been entered (step 14;
Y), the branching claw 68 is switched so that the paper is conveyed in the direction of the multiple-sheet automatic duplex unit (IV) (step 1).
6). On the other hand, when the data for the next page has not been input (step 14; N), the branch claw 68 is switched to the single-sided single-sided sheet processing paths 69 to 71 (step 1).
5).

When the sheet is conveyed to the single-sided double-sided processing paths 67 to 71 (step 21; Y), the sheet is conveyed downward by the claw 69, and the reversing sensor (shown in the figure) arranged above the conveying roller 71 on the sheet conveying direction. No), the trailing edge of the sheet is detected, the rotation direction of the transport roller is reversed by the detection of the trailing edge (step 25), the sheet is transported to the re-feed loop 72, and is transported to the registration roller 62. Here, the laser 8 of the writing unit is turned off, and the image forming process is controlled so that the image is not placed on the drum (step 32). On the other hand, the sheet is conveyed while the back surface of the sheet is brought into close contact with the drum, and when the resist arrives, the switching claw 67 switches the sheet discharging direction (step 33; Y, step 34) and is discharged to the sorter (III) side.

The control when the multi-sheet automatic double-sided unit (IV) is used will be described. In FIG. 24, when the print data of the next page is input, the branch claw 68 is switched (step 16) to convey the paper in the direction of the multiple-sheet automatic double-sided processing unit (IV). This judgment is made only for the first sheet, and once the branch claws 68 are switched and the paper is guided to the multi-sheet automatic double-sided unit (IV), the branch claws 68 are set in the same direction until the series of printing is completed. . When a series of printing is completed and the storage of multiple sheets in the automatic duplex unit is completed, the timer is started. When the timer reaches a certain value, reset the timer and set the discharge request. In response to this discharge request, the sequence starts the operation of discharging the paper of the duplex unit.

As described above, according to the first embodiment, the reversing function of the double-sided unit can be achieved without using the digital composite image processing apparatus having the double-sided function and the paper ejection reversing unit at the time of paper ejection. By using the printer, it is possible to arrange the discharge page order when using the printer in the print page order, reducing the machine cost and the machine installation space. Further, by having two kinds of modes, one is a mode for discharging the sheets while reversing them one by one and the other is a mode for sequentially discharging the sheets while reversing a large number of sheets collectively, it is possible to shorten the printing time from the start to the end of the printing. .

Operation of the Second Embodiment The facsimile operation of the digital composite image processing apparatus will be described below. First, the basic operation of the facsimile machine will be described. The digital composite image processing apparatus has the functions of MF, G2, G3, and G4 facsimiles, the transmission densities are 3.85, 7.7, and 15.4 lines / mm. 24
It is possible to perform density conversion with each other using 0, 300, and 400 dpi and using the scaling function. Also, SA
Using the F memory, memory transmission / reception, relay, confidential reception, polling, etc. can be realized, and further, memory transmission, memory reception, reception output, etc. can be simultaneously performed while the transmission original is being stored in the memory.

Transmission operation APL2 is set by setting the original and pressing the start key.
The dialing is made to the destination stored in the RAM of and the designated destination is called. When it is determined that the other party is the facsimile machine by executing the predetermined training sequence, the document reading operation is started. Here, when the start key is pressed in the state where there is no document, a display is displayed which detects this and prompts the document to be reset. When the original reading operation starts, the scanner operates to read the original, and the EXTO is read through the individual circuits shown in FIG.
Data is output to the terminal of the UT. At this time MUX1, M
By selecting UX3, it is possible to select whether or not to use the IPU (FIG. 21), and further, the internal function of the IPU is freely selected by the program. This signal is supplied to the engine I / F (FIG. 19) and stored in the page memory according to the bit size of the page memory. E
XTOUT is sent in a multi-value of 8 bits per pixel. On the other hand, the page memory is 16-bit compatible,
The adjustment is performed here because the bit configuration is different.

When the data from the scanner enters the page memory, the data is compressed and stored in the SAF memory of APL2. In this way, the data from the scanner is converted into S
The following characteristics can be obtained by transmitting while accumulating in the AF. For reading from the scanner, one A4 size sheet can be read in about 2 seconds, while the G3 transmission time is about 9 seconds for each A4 size sheet. Thus, the transmission time is about 4.5 times longer than the reading time. Therefore, in a device such as this digital composite image processing device that can be used in combination with a copying machine, a facsimile device, a printer, etc., for example, when the next person makes a copy during facsimile transmission, the transmission process of the facsimile can be accelerated. Need to be finished. However, facsimile transmission may be faster or slower depending on the performance of the other device. By transmitting the read data while accumulating the read data in the SAF as in this example, the apparent transmission speed can be increased. Further, since the transmitted document is stored in the SAF memory, the image can be correctly sent by resending or re-calling when an error occurs during transmission, the line is disconnected, or the like. In this way, the data accumulated in the SAF can be accessed from the G3 facsimile unit or the G4 facsimile unit via the system bus.

Reception of Image Information In FIG. 22, the received image data is converted into a digital signal by the modem. This is converted into raw data via DCR, further compressed and stored in the SAF memory. At this time, the reason why the data is restored to the raw data by the DCR and then compressed again is that the received data usually includes an error on the line.
This is because if the data is stored in the SAF as it is, it is impossible to distinguish between a hardware error and a data error. When recompressing, a memory efficient method is used. The data stored in the SAF memory is printed out page by page.
It should be noted that, depending on the mode setting, one file may be stored before being output. In order to output from the SAF memory, it is necessary that the page memory of FIG. 19 is not used by any other APL and the copier is not used.

When these conditions are met, the data in the SAF memory is expanded into the page memory while being restored to raw data via CEP. Select the optimum paper size after the expansion is completed. At this time, the data in the page memory is A4 portrait, and when the optimum paper is A4 landscape, the data in the page memory is rotated 90 degrees by the rotation control and is output to the selected paper. With this function, it is possible to prevent an A4 vertical image from being printed on an A4 horizontal sheet and to have a margin. This function can rotate not only the received output but also the image information read by meeting the other device in the transmission mode by 90 degrees, so that, for example, the transmission original is A4 horizontal and the reception side is A4.
Up to now, it was sent down to 71% in the vertical direction, but if you take in 90 degree rotation, you can send it at the same size and it will be easier to see on the receiving side. Here, H instead of SAF memory
When using the DD, set the SAF memory as a buffer and use the APL1's SCSI interface for HD.
It becomes possible by driving D.

ADF Control Next, in the normal mode and in the case of facsimile transmission,
A method of controlling the ADF will be described. FIG. 27 shows the operation when the copy mode is set, and FIG. 28 shows the operation when the facsimile mode is set. In the copy mode, as shown in FIG. 27, if the job is at the beginning, the paper is fed. If the counter that manages the number of fed sheets is 0 to determine the beginning of this job, it is determined to be the beginning of the job. The counter that manages the number of fed sheets is a counter that is incremented by 1 each time one sheet is fed, and returns to 0 when the number of sheets matches the set number. Also, 0 is set when the machine is stopped and the set number of sheets is changed without taking the set number of sheets. When one job is completed and there is a document on the document table, a document discharge signal for discharging the fed document is output, and at the same time, a document feed signal is output. If there is no document, only the document ejection signal is output to the ADF.

On the other hand, as shown in FIG. 28, during facsimile transmission in the facsimile mode, by dialing the destination and pressing the transmission start key, a reverse paper feed signal is transmitted to the ADF. As a result, the ADF
The original placed on the original table is conveyed to the original reading unit while being inverted using the inversion function. In synchronism with the completion of reading the original, a reverse paper ejection signal is sent to the ADF to eject the original. If the original is still on the original table, a reverse paper feed signal is sent to the ADF to feed the next original.

By the way, in the normal copy mode and the facsimile transmission mode, the way of placing the original is different. In the normal copy mode, in the case of the ADF of this embodiment, the document surface must be set face up, and in the facsimile transmission, the document must be set face down. In order to prevent the operator from getting lost, a guidance display explaining how to place the document is displayed. When you choose to send by fax,
Output the "Please set the document side down" display,
When the copy mode is selected, the message "Please set the document side facing up" is output. When there is a document, the display is suppressed, and when there is no document, the display output is switched according to the mode of the digital decoding image processing apparatus.

Further, in FIG. 28, the operator who placed the original in the same manner as in the copy mode without looking at the guidance or the instruction manual during the facsimile sends a blank sheet to the other party. To prevent this, after reading the original, the IPU activates the function to count the number of black dots of the original on the page memory, and if it is determined that the black dots are below a certain value, then the fed original is determined to be blank. Then, the transmission process is stopped, and the document inverting means is transmitted to the ADF. This operation for determining the front and back sides of the original takes time to read the original if all the originals are read, so it should be executed only for the first original and if the original is placed incorrectly for the following originals. Performs simple document feeding and discharging,
When it can be determined that the document surface is normally set face down, reverse feeding and reverse discharging are repeated. In this way, by checking the presence or absence of an image on the document, if the document is placed incorrectly, it will be sent to the other party from the end of the page.
Facsimile transmission can be performed without a problem such as a blank original being sent.

As shown in FIG. 29, the transmission process may be stopped and a warning may be issued to an operator who has misplaced the document when it is judged that the document is blank.
Further, as shown in FIG. 30, no operation is performed on the document even if a certain time has elapsed after the warning is issued, as in the case where the operator who misplaced the document leaves immediately. If not, the document inversion process may be performed and the transmission from the last page may be started.

As described above, according to the second embodiment, at the time of transmission, it is possible to perform transmission from the first page in the same manner as in a normal facsimile apparatus, and the receiver side has the trouble of aligning the received originals. Is omitted. Further, even when the user sets the document upside down during document transmission, it can be transmitted with a constraint condition (transmitted from the subsequent page), and it is possible to eliminate communication costs and waste of paper without sending a blank sheet. Further, by applying the blank original determination to only the first sheet, the original processing time can be shortened and smooth facsimile transmission processing can be performed. Furthermore, by eliminating the transmission from the page behind the document and reducing the downtime of the facsimile function as much as possible, the digital decoded image processing apparatus can be operated smoothly.

[0076]

According to the present invention, in a copying machine with a double-sided function, even if the discharge reverser unit for discharging paper is not used, the reverser function of the double-sided unit is used. The order can be arranged in the order of printed pages, reducing the machine cost and the machine installation space. In addition, it becomes possible to send from the first page without error when sending a facsimile.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a digital copying machine according to an embodiment of the present invention.

FIG. 2 is a top view showing a configuration of a writing unit of the above.

FIG. 3 is a side view showing the configuration of the writing unit of the above.

FIG. 4 is an explanatory diagram showing a layout and an optical path of the writing unit of the above.

FIG. 5 is a block diagram showing a configuration of an electric transmission control unit that controls each unit of the digital composite image processing apparatus.

FIG. 6 is a functional block diagram of the electric equipment control unit.

FIG. 7 is a block diagram of an image scanner unit of the above.

FIG. 8 is a schematic block diagram of the image processing unit of the above.

FIG. 9 is an explanatory diagram showing a format of end data of the image process unit.

FIG. 10 is a block diagram of the memory system of the above.

FIG. 11 is an explanatory diagram showing a data flow in a conventional memory system.

FIG. 12 is an explanatory diagram showing a data flow of a memory system in the digital composite image processing apparatus of this embodiment.

FIG. 13 is a configuration diagram of the memory device of the above.

FIG. 14 is a configuration diagram of a memory unit in the memory device.

FIG. 15 is an explanatory diagram showing three data types of image data handled in the memory unit.

FIG. 16 is another configuration diagram of the memory device of the above.

FIG. 17 is a configuration diagram when image data is saved using an external storage device.

FIG. 18 is another configuration diagram of the memory device of the above.

FIG. 19 is a configuration diagram of an application unit of the above.

FIG. 20 is an explanatory diagram showing a data flow read by the scanner of the same as above.

FIG. 21 is a schematic block diagram of the image processing unit of the above.

FIG. 22 is a configuration diagram of APL2 of the same.

FIG. 23 is a flowchart of the operation of the first embodiment.

FIG. 24 is a flowchart of the operation of the first embodiment.

FIG. 25 is a flowchart of the operation of the first embodiment.

FIG. 26 is a flowchart of the operation of the first embodiment.

FIG. 27 is a flowchart showing the operation of the automatic paper feeder in the copy mode.

FIG. 28 is a flowchart showing the operation of the automatic paper feeder in the facsimile mode.

FIG. 29 is a flowchart showing another operation of the automatic paper feeder in the facsimile mode.

FIG. 30 is a flowchart showing another operation of the automatic paper feeder in the facsimile mode.

[Explanation of symbols]

 3 light source 8 CCD 9 contact glass 24 polygon mirror 40 photoconductor drum 41 charging charger 42a main developing device 42b sub-developing device 43a, 43b toner replenisher 44 transfer charger 62 registration roller 64 heat roller 65 pressure roller 66 discharge roller 67, 68, 69 Switching claw 70 Tray 72 Refeeding loop 100 Original feed tray 103 Paper ejection tray 105 Original reversing ejection roller 106 Reversing path switching pawl 104 Paper feeding pawl I Copy machine main body II Automatic document feeder III Sorter IV Many sheets Automatic duplex unit

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[Procedure amendment]

[Submission date] October 13, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

FIG. 11

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 9]

[Figure 10]

[Figure 4]

[Figure 8]

[Fig. 12]

[Figure 5]

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Claims (5)

[Claims] 1. A digital composite image processing apparatus having a copy function for copying an original in an original reading section and a printer function for printing input data, and a mode switching means for switching between a copy mode and a printer mode, and a printer. In the mode, the digital composite image processing apparatus is provided with a paper reversing means for reversing the front and back surfaces of the paper for which one-sided printing is completed, and a discharging means for discharging the paper reversed by the paper reversing means to the outside of the machine. . 2. A digital composite image processing apparatus having a copy function for copying an original in an original reading section and a printer function for printing input data, and mode switching means for switching between a copy mode and a printer mode, and printing. Stock means for temporarily stocking at least one sheet of paper that has finished printing, storage means for guiding a plurality of paper sheets that have been printed in the printer mode to the stocking means, and temporarily storing the paper, and printing on paper When the print end detection means detects the end of printing of all the sheets, the storage means reverses the front and back of the sheets stored in the stock means to the outside of the machine. A digital composite image processing apparatus, comprising: a sheet discharging unit for discharging. 3. A digital composite image processing apparatus having a copy function for copying an original of an original reading section and a printer function for printing input data, and a mode switching means for switching between a copy mode and a printer mode, and printing. Stock means for temporarily stocking at least one sheet of paper that has finished printing, storage means for guiding a plurality of paper sheets that have been printed in the printer mode to the stocking means, and temporarily storing the paper, and printing on paper End detection means for detecting the end of the sheet, and every time the end of printing of one sheet is detected by the print end detection means, the storage means inverts the front and back of the paper stored in the stock means and discharges it out of the machine. And a paper ejecting means for controlling the digital composite image processing apparatus. 4. A digital composite image processing apparatus having a copy function for copying a document in a document reading section and a facsimile function for transmitting a document in the document reading section, and mode switching means for switching between a copy mode and a facsimile transmission mode, Digital compound image processing characterized by comprising automatic document feeding means for automatically feeding the original document to the original reading portion and original document reversing means for inverting the original document arranged in the automatic document feeding means in the facsimile transmission mode. apparatus. 5. A digital composite image processing apparatus having a copy function for copying a document in a document reading section and a facsimile function for transmitting a document in the document reading section, and a mode switching means for switching between a copy mode and a facsimile transmission mode. , A document automatic feeding means for automatically feeding a document to the document reading section, a blank sheet determining means for determining whether or not the document placed in this document automatic feeding means is a blank sheet, and in the facsimile transmission mode, this blank sheet determining means A digital composite image processing apparatus, comprising: a document reversing unit that reverses the front and back surfaces of the document arranged in the document automatic feeding unit when it is determined that the document is blank.